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Participants must answer at least 12 of 15 questions correctly (80%) to earn CE credit.

AGD - Self-Instruction Exercise No. 414 - Implants
Response of soft tissue to different abutment materials with different surface topographies: a review of the literature

Self-Instruction Exercise No. 414
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Exercise No. 414
Subject Code: 690
Implants

The 15 questions for this exercise are based on the article Response of soft tissue to different abutment materials with different surface topographies: a review of the literature on pages 18-25. This exercise was developed by Jean J. Carlson, DDS, MAGD, in association with the General Dentistry Self-Instruction committee.

Reading the article and successfully completing this exercise will enable you to:

  • understand the soft tissue response to various types of implant and abutment surfaces;
  • identify the factors contributing to peri-implant disease; and
  • recognize the effects of abutment surface modifications on the periodontium.

Answers for this exercise must be received by December 31, 2018.

  1. Implant soft tissue healing can be affected by all the following factors except one. Which is the exception?

    A. component shape and design
    B. implant-abutment stability
    C. implant surface topography
    D. implant location

  2. When comparing gold to titanium abutments, studies show no significant difference in the health of surrounding soft tissue. Statistically significant differences in tissue response exist when aluminum oxide abutments are compared with titanium.

    A. Both statements are true.
    B. The first statement is true; the second is false.
    C. The first statement is false; the second is true.
    D. Both statements are false

  3. Average connective tissue width around a dental implant is _____ mm.

    A. 1.66
    B. 1.76
    C. 1.86
    D. 1.96

  4. The mean soft tissue height around a dental implant is _______ mm.

    A. 2.0-2.5
    B. 3.0-3.5
    C. 4.0-4.5
    D. 5.0-5.5

  5. The connective tissue attachment around a dental implant includes a ____-μm layer of proteoglycans.

    A. 18.5
    B. 19.0
    C. 19.5
    D. 20.0

  6. The connective tissue around dental implants is ___% collagen and up to ___% fibroblasts.

    A. 85; 3
    B. 77; 7
    C. 68; 11
    D. 60; 15

  7. Collagen fibers of connective tissue around dental implants run at a right angle to abutment surfaces. Peri-implant connective tissue shows poor vascularity.

    A. Both statements are true.
    B. The first statement is true; the second is false.
    C. The first statement is false; the second is true.
    D. Both statements are false.

  8. Gram-negative microorganisms may cause bone loss around conical abutment connections by activation of _________.

    A. osteoblasts
    B. osteoclasts
    C. fibroblasts
    D. fibroclasts

  9. A mean follow-up time of _____ months was utilized in the canine studies.

    A. 2.075
    B. 2.175
    C. 2.275
    D. 2.375

  10. Schupbach & Glauser found perpendicularly oriented collagen fibers on ___________ abutment surfaces.

    A. machined
    B. oxidized
    C. acid-etched
    D. sandblasted

  11. Nothdurft et al utilized sandblasting with airborne alumina particles of _____ µm.

    A. 90
    B. 100
    C. 110
    D. 120

  12. Kim et al found the surface roughness value of zirconia to be _____ µm.

    A. 1.900
    B. 0.190
    C. 0.109
    D. 0.019

  13. X-ray spectroscopy demonstrated that polished titanium possesses a surface roughness of approximately ____ nm.

    A. 10
    B. 11
    C. 12
    D. 13

  14. According to vinculin distribution studies, epithelial cells prefer adhesion to the polished surfaces of ________.

    A. gold
    B. zirconia
    C. titanium
    D. nickel

  15. Kim et al found that fibroblast proliferation around zirconia and nitride-coated specimens was best at day ___.

    A. 7
    B. 8
    C. 9
    D. 10


Evaluation

Please respond to the statements below, using the following scale:
1 Poor; 2 Below average; 3 Average; 4 Above average; 5 Excellent

Practicality of the content 1 2 3 4 5
Benefit to your clinical practice 1 2 3 4 5
Quality of illustrations 1 2 3 4 5
Clarity of objectives 1 2 3 4 5
Clarity of exercise questions 1 2 3 4 5
Relevance of exercise questions 1 2 3 4 5
 
Did this exercise achieve its objectives? Yes No
Did this article present new information? Yes No
How much time did it take you to complete this exercise? mins


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